30s bias cut dress 1930s Inspired Wedding Key 1930s features include 1930s Bias Gown - Museum

If your dress is solid, like this one, I would highly suggest throwing on a jacket or wearing a button down tied around your waist

Back: Sheer lace-up design

REVIVE Foam CushioningExtremely lightweight foam that reduces foot fatigue & pressure while providing 20% more rebound for energized steps

A perfectly classic red tartan plaid holiday dress from Dynasty George thats available in XS-XXL and made from 100% deadstock fabric

Classic black tie is an example of the former, while black tie optional would be an example of the latter.If youve studied up on black tie optional, you might very well assume that there isnt a formal dress code that gives you any more latitude

Its smart casual